Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Biosorption of Pb and Cr by Using Sargassum thunbergii

모자반(Sargassum thunbergii)을 이용한 Pb 및 Cr 제거

  • CHO Moon-Chul (Division of Chemical Engineering, Pukyong National University) ;
  • AHN Kab-Hwan (School of Environmental Science, Catholic University of Pusan) ;
  • SUH Kuen-Hack (Division of Chemical Engineering, Pukyong National University)
  • 조문철 (부경대학교 화학공학과) ;
  • 안갑환 (부산가톨릭대학교 환경과학부) ;
  • 서근학 (부경대학교 화학공학과)
  • Published : 2005.06.01
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Abstract

The biosorption of Pb and Cr by Sargassum thunbergii was investigated in a batch conditions. The Pb and Cr uptake capacity of Sargassum thunbergii was 232.5 mg Pb/g biomass and 91.6 mg Cr/g biomass, respectively. An adsorption equilibria was reached within about 0.5 hr for both the Pb and the Cr. The adsorption parameters for both the Pb and the Cr were determined according to the Langmuir and Freundlich model. With increasing pH values, more negative sites are becoming available for the adsorption of Pb and Cr. The selectivity of mixture solution showed an uptake order of Pb>Cu>Cr>Cd. Pb and Cr adsorbed by S. thunbergii could be recovered ken 0.1 M HCl, 0.1 M $HNO_3$ and 0.1M EDTA by a desorption process, and the efficiency of Pb desorption was above $95.8\%$, whereas the efficiency of the Cr desorption was below $50.7\%$.

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References

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